Improvement in mould-blacking machine



BENJAMIN s. BENsoM'oF BALTIMORE, MARYLAND. Latas Pam No. 83,448, zaad october 2'7, 186s.

IMPROVEMENT IN MOULDBLACKIN G- MACHINE.

The Schedule referred to in these Ilhettersv Patent and making part of the same.

To all whom it may concern.-

vBe it known that I, BENJAMm S. BnNs0N,of the city and county of Baltimore, and State of Maryland, have invented a new and improved -Mould-Blacking Machine; and I do hereby declare that the, following is a full, clear, and exact description of the construction and operation ofthe same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a vertical section.

Figure 2 'is an axial section of the brush and its stem. n

Figure 3 is a similar sectiouof the valvegchamber E'. Figure 4 is a cross-section of the brush-stem, and showing their connection.

This invention is an improvement in machines for blacking the moulds used in casting metallic pipe, and

downward, in a small chamber or enlargement, E', the

object of which pipe is to conduct the blacking-iluid from the reservoir D to the blzwking-brushB.

The stem E, of brush B, is hollow, forminga sleeve, Which encloses the lower end of pipe D, and slides up and down on it, the lower end ofthe pipe being properly packed. The interior ofthe brush itself forms a chamber, which receives the blacking, and from which' it is discharged, through the walls of the brush, among the bristles, by means ofV small ducts, l) l) l). The lower end of the stem from which the blacking flows into chamber B of the brush is provided with a springvalve, c, seating upward. The stem F is rotated about the pipe E, within it, by means of a crank-shaft, and wheel, G, gearing with a horizontal wheel, G, through the centre of which the stem slides up and down, being prevented from rotating independently of the wheel by means of a spline, f.

The hub of the wheel G' is elongated below the wheel, and bears a spool, H, which, by means of a latch or stop, t, may be locked to, so as not to rotate at all, or may be unlocked, and left to revolve loosely upon the hub g ofthe wheel G. A cord, I, passing over a couple of pulleys, yi i, 'supported by an arm, a, which is itself support-ed by the hub, extends down to the upper end oithe brush, to which it is attached. p

Beneath the mould C, I provide a tank of water, J, the purpose of which will be hereafter explained.

M is a stout standard, projecting upward from the iloor of the instrument, and serving as a spindle-step, upon which, when. the brush is raised out of the mould, the brush, wheels, spool, and pipe E, can be swung around out of the way, leaving the approach to the upper part of the mould unobstructed, The whole of said apparatus ispivoted onrthe standard M, by means of a long sleeve-socket, N, which slips down over the standard, and which not only allows the apparatus to be rotated ou the standard,but also to be raised vertically, if necessity should require.

The Wheel G' bears in an arm or beam, O, from the end of which a curved rod, P, extends down to alevel with the top of the mould, where it supports a ring, R, the object of which is to encompass the top of the mould when the apparatus is in use, and thusto hold the wheel G, and the stem F, and brush B, so that they will'work exactly in the axial line of the mould, in order that the space between the brush and the mould may be uniform on all sides, and the blacking may be evenly distributed. When the ring R is tobe placed over the end of the mould, the,whole apparatus is raised up, by sliding the sleeve N upward on the standard M, the ring is then swnngto place, and properly adjusted, and the apparatus is lowered down, until the ring rests in its proper position, around the upper end of the mould, as seen in iig. 1.

The operation of a machine thus constructed is' as follows:

After the ring R is Xed in position, as above explained, the latch h is milocked, and the weight of the brush B causes it to fall through the mould hito the tank J, where it is moistenedby the water, and cleansed from all dirt that may have lodged among or upon the bristles.

The descent of the brush causes a suction in the tube E, which draws the blacking from the reservoir D, through the pipe E, the downward-seating valve. e in the pipe opening to allow the iiuid to pass, and the l upward-seating valve c of the brush being all the while 'elosedby the action of its spring, seen in iig'. 2. When the brush has fallen into the water, the valve e closes, and prevents the return of the blacking to the reservoir. Then the brush has thus fallen into the tank, pumping the blacking from thereservoir, and lling the pipe E, by means of its fall, the operator vlocks the spool H, by means of the latch h, so that the spool cannot revolve, and then, by means of the crank G, rotates the brush. The brush, towhich one end of the cord I is iixed, thus turning on its vertical axis, and the spool, to which the other end of the cord is fixed, being immovable, the cord will be wound around the spool, and will slowly draw-up the brush, through the mouldtill itrises to the position seen in fig. 1. The moment the brush begins to ascend, it commences to shorten the distance between the valve c of the brush, and the valve e of the pipe E, through all of which distance the pipes are filled with liquid lblacking; The latter becomes instantly subjected to lsuch a coinpression, therefore, that it must escape by some means or other. It cannot go back to the reservoir, by rcai son ofvztlve e", so, when sufiioient force has been aptill the brush ceases to ascend. When the operator has caused the brush thus to pass up, through the mould, to its top, he removes the mould, puts another in its place, unlocks the spool, allowing the brush to fall into the water aga-in, and is ready to repeat the operation above described.

It will be observed that in this instrument the brush and pipes E and F, With their valves, combine in one instrument a blocking-'brush and a forcing-pump, forcing the liquid from the reservoir to the mould by the same means which are employed to distribute the blaoking uniformly on the mould.

It will also be observed that the distribution of the blocking is as perfectlyL uniform as it is possible to have it, since the blocking is thrown from all lsides of the brush, which, during the time, is rotating on its vertical axis, and rising through the moulds.

The operation of the whole instrument is exceedingly simply and convenient. In using it, there is no delay in adjusting the moulds, all the working-parts are hoisted 0r swung out of the way.

The bristles of the brush are long enough to come in contact with the walls of the mould, and, as the brush revolves, they smooth down the blocking upon the Walls.

On the 3d day of September, 1861, u. patent was granted to me for an improved machine of this class, in which the blacking was poured by the workman into the mould, above the brush, and distributed by the latter as it descended. That machine also contained a pump, which operated to force water into the mould as the latter, or the plunger, was raised and lowered. The

machine was, however, essentially different in construction and opcrationfroln the one which forms the sub 4 ject of this application.

The Hacking was not automatically supplied through a tube while the'brush was spreading and smoothing it; there was no revolving reciprocating hlackingdn'ush; the apparatus for communicating mot-ion to the brush was essentially different; and there were other points of marked dissimilarity, not only in the operatioxnbut in the very purpose of the device.

In the present application I do not claim any of the improvements embraced in the former, nor anything operating iu a similar manner, and for a similar purpose; but having thus described my invention,

What I claim as new, and desire to secure by LettersPa-tent, is-

l.A Supplying the brush and mould with blackwash,

through a hollow shaft or tube, While the brush.' is spreading and smoothing it. I

2. The reservoir D, communicatingpipes E F, valves e' o, and hollow revolving shaft, in combination with a revolving reciprocating brush.

3. The spool H and pawl or latch 7L, in combination with the cord lf and pulleys i Ii.

4. A revolving reciprooatnig brush, in combination with a force-pump, so arranged that it will supply the tat-ed.

BENJAMIN S. BENSON. lllitnesses:

BENJAMIN PRICE, Jr., LEVI TISCHMEYER.

or facing, for coating the iunersurface of pipe-moulds,

brush with the blaekwash at the time of its being ro- 

